Peak water is “the idea that we are effectively running into constraints and limits on our water use,” said Gleick, in part because of population growth. “It lets us think differently about the limits to the water that’s available for us to use, and about the water that it’s appropriate for us to use, and about the policies to put in place to avoid the bad things that happen when we reach or exceed peak constraints.”

Gleick breaks the concept into three categories:

Peak renewable water: “Where we can no longer increase the amount of water we’retakingoutofrivers – when we take all of it.”

Across all three categories, said Gleick, we are very bad at understanding limits. “We don’t measure peak water carefully, we don’t collect the data necessary to understand when we’re approaching or exceeding peak water limits.”

“Understanding and applying the idea of peak water is the first step toward developing strategies and institutions to avoid the worst disasters associated with overuse and inappropriate use of our water resources.”

One under developed game changer is future tech buildings that let you reuse water. Such as on boats, it's called grey water or black water. Citizens can choose to shower then water there garden afterwards. Peace